Medical vibrator.



W. H. WOOLVERTON.

MEDICAL VIBRATOR.

APPLICATION man NOV. 20. Ian.

1,302,620, Patented May 6, 1919.

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w. H. WOOLVERTON.

MEDICAL VIBRATOR.

APPLICATION FILED NOV. 20.1911.

Patented May 6, 1919.

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MEDICAL VIBRATOR.

APPLICATION FILED NOV. 20. 19-17.

Patented May 6, 1919.

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WILLIAM tanner wootvnn'roiv, or WASHINGTON, nrsriiic'r or COLUMBIA, nssreivon' 0F ONE-HALF T0 JOHN C. SCAIBIBQILKEQ[l'GrI-I, OF IBISHOPVILLE, SOUTH CAROLINA.

MEDICAL VIBRATOR.

Specificationof Letters Patent.

Patented May 6, 1919.

Application filed November 20,1917 Serial No. 202,981.

To all whom it may concern:

Be it known that 1, {WILLIAM HENRY:

WooLvERroN, a citizen of the United States, residing at Washington, in the District of Columbia, have invented certain new and useful Improvement in Medical Vibrators; and I do declare the following to be a full, clear, and exact description of the invention,

such as will enable others skilled inthe art towhich it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form. a part of this specification.

This invention relates to vibrating ma chines to be used in the treatment of certain diseases and disorders, and has for its object to provide a vibrator which ispreferably electrically driven, and which will produce rapid and effective vibrations, and which is so constructed and arranged that the extent of vibratory movement can be quickly and readily controlled.

With this object inviewj the invention con-:

sists in the novel construction and arrangement of the vibrating machine, all ofwhich will be first fully described and afterward.

specifically pointed out in the appended claims. .1 i i Referring to the accompanying drawings:-- U a l Figure 1 is an elevation illustrating the controlling the same, e

Fig. 2 is a top plan view of the vibrator,

Fig. 3is an elevation from the side opposite to that shown injFig.1, M

Fig. .4 is an enlarged vertical sectional view through the vibrating machine,

.Figs. 5, "6 and 7 are plan views of the 1'0." tor illustrating different positions of the central part for producing vibrations of vary ing intensity. a e

Fig. 8 is an enlarged fragmentary set tional view illustrating the construction for adjusting and positioning the central vibration controlling member, and r Fig. 9 is an enlarged fragmentary sectional view through the rotor taken online 9,9 ofFig. 8. j L, 1

Like numerals of reference indicate the vibrator and its connections for driving and sameparts throughout the several figures, in

which a .1 indicates the vibrating machine which is preferably connected to an electric motor 2 by means of afiexible shaft 3, the motor 2 in turn being connected with a rheostat 4: connected to a source of current, which as shown in the accompanying drawings may be an ordinary electric lighting fixture 5.

erably circular base 6 having in the effective face thereof a plurality of annular grooves T, said base 6 being connected to the body portion of the machine 1 preferably by a re silient member 8. Upon this'resilient member8 the frame 9 is mounted, said frame being provided with two journal boxes or bearings 10 so as to receive the shaft 11 of the vibrating rotor 12, the said shaft 11 being preferably slotted at 13 to receive the end .of thefiexible driving shaft 3.

Arranged on the frame 9 and partially encompassing the rotor 12 is a guard 14. Connected centrally of the frame9 and preferably above one of the journals 10 is a handle 15, connection being made with the frame 9 by means of a flexible member 16.

1 Referring particularly to the vibrating rotor 12 itwill be seen from the several figures that the same includes an annular chambered shell 17 fast to and rotatable with the shaft 11. i In thechamber 18 of the rotor shell 17 is disposed a similar but smaller or less diametered annular chambered shell 19 having therein an elongated opening 20 (Figs. 5,6,7 and 8) through which the shaft 11 asses, which elongated opening 20 provides or a shifting. or an eccentrically positioning of the shell 19 within the outer or main shell 17 Disposed withinthe inner chambered shell 19 is a relatively heavy annular member 21, said member 21 being also provided with an elongated opening therethrough coinciding with the elongated opening 20 in the chambered shell 19, also hav ingthe shaft 11 passing therethrough.

Referring particularly to Figs. 5, 6 and 7 it will be seen that the, central relatively heavy member 21 may be provided with one or more holes or perforations 22 on one side of the center of the annular member 21 so 6O The vibrating machine consists of a pref-.

as to unbalance the said relatively heavy annular member 21. It will also be seen from Figs. 5, 6 and 7 that oppositely disposed leaf springs23 and 2a are positioned between the annular wall 25 of the inner chambered shell 19 and the periphery 26 of the relatively heavy annularmember 21 so that the member 21 is resiliently mounted within the inner shell 19.

27 indicates the cover plate for the rotor (Fig.4 saidplate being secured to the annular wall of the outer shell 17 by means of screws 28. Entering the "rotor' from "the cover plate 27 are two oppositely disposed pins 29and 30, each of which passes'through elongated openings 31 and 32 in the "rela tively heavy annularmember 21 and-"opening in the inner retai-ning shell 19,:said *pin 30 being threaded into-the outer shell'1'7 at 33, as shown in Fig. 4.

Referring now'to the-other pin 29 it will be seen *that'the sameisprovided on'its inner end with a toothed segment 3% particularly "as seen in Fig. 8 meshing with a toothed portion 35 of the innershell 19.

Having thus fully described the several parts of this invention, its operation is as follows The parts being assembled inthemanner as illustrated in the "accompanying drawingsfiche amplitude of the vibratory motion of the machine is controlledby the j position of the inner shell 19 and its relatively heavy "annular member 21. As will appear from Figs. 5, 6 and 7, this inner-sl1ell 19 and its annular member 21 are capableof being variously positioned within the outer or main shell 17 so as to unbalance the rotor rotating the pin "29 "having thereon the toothed segment 34. "By'a rotatory movement of the pin 29,-'1ts segment 34: meshing inthe shell 19 moves'the inner-shell1'9 toward or.

away from the center of the rotor as may be desiredin order to diminish or increase the amplitude orvibrations of the machine.

In operation when the extent of vibratory motion has been first determined and theinner shell 19 and its relatively "heavy parted to the shaft 11 and its member '21is-set in desired position by means of the threaded pin 30, the vibrator is placed on'that part of'the humananatomy which is toreceive vibratorymotion. The machine is grasped by the 'operator or patient at'thehandle 15 and thebase 6 is caused to lightly rest upon the part of the body-to receivethe wibratory'motion Current isthen deliveredto the motor 2 and the rotary movement thereof is im-' rotor through the medium of the flexible shaft 3. It is preferable, though not essential, to-emfploy machine, the amplitude of whith is con- "trolled :in .the mamren' as heretofore described. This vibratory motion imparted tothe machine is illustrated in dotted lines in Fig. 1, and by reason of the flexible connection S betweemtlie' fraine 9 and the base 6 a vibratory movement is delivered to the machine in a most efficient manner and at the-same time without shockor jar or "dis comfort to the patient. At the same time the flexible connection between the machine and -the"hand'le 15 provides for the eflicient vibration of the machine while being grasped by the hand of the operator or patient -so that the vibrations of the niachine "are in no way altered or lessened, the fie'Xible character of the connection 16 being ill-ustrated by dotted lines in Fig. 3. From the foregoing it will be understood that when these *flex'ible connections "8 and 16 are employed the 'v ibra'ting machine is free to vibra'te unhampered and is capable of producing very rapid and efiicient vibrations.

I claim- 1..A'machi-ne of'the type described, including a rotor comprising-a shaft, an' a11- nular chambered shell rigidly secured a to saidshaft, "a less diametered or intermediary shell within the aforesaid shell, said less diametered =shell being provided with athaftreceivingelongated opening, a relatively "heavy and resiliently mounted member positioned within the: aforesaid intermediaryi shell, means forvariably and eccentrically positioning said intermediary shell, said shaft being adapted to haveimparted thereto rotary movement.

A machine of thetype described, ineluding a" rotor, comprising a shaft, an annular chambered shell rigidly secured to said *s'haft, f a less diametered 5 intermediary shell, said intermediary she'll being a rovided with a shaft receiving elongated opening, relatively heavy and resiliently mounted member-positioned within said intermediary shell, an element positioned in the outermost shell of'said rotor; said elementand said intermediary shell being .provided with intermeshing means for varying-thejpo'sitioningof the latter with respecttdthe eenterof the rotor, said shaft being adapted "to 'have imparted thereto rotary movement.

*3. A 'in'achineof the type described including a' rotorcomprising' a 'shaft, an annular chambered shell rigidly secured. to said shaft, a less -diametered intermediary shell, said intermediary shell being provided with a shaft-receiving elongated opening, a relatively heavy and resiliently mounted member positioned within said intermediary shell, an element positioned in the outermost shell of said rotor said ele ment and said intermediary shell heing provided with intermeshing means fol-Varying the positioning of the latter with respect to 10 the center of the rotor, a handled-element positioned in one wall of the outermost shell of said rotor for setting said intermediary shell, said shaft being adapted'to have imparted thereto rotary movement.

In testimony whereof, I aflix ture, in presence of two witnesses.

' WILLIAM HENRY WOOLVERTON. Witnesses:

C. HUGH DUFFY, M. H. BERGMANN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. 0.

my signa 15 

